Hi Filipe,
My understanding is that an S4/HANA version is essentially Business Suite on the HANA database. Please check if the EA-PS extension is activated in SFW5 and all the EHPs have been applied. All business functions till EHP 7 should be capable of being activated if the appropriate EHPs have been installed. PSM_FM_15 PSM is described as F15 Schnittstelle for Germany so you have to check whether it is applicable to your situation.
Thanks
Shyam